err

err verb be deceived, be erroneous, be in the wrong, be misguided, be misled, be mistaken, blunder, cause error, commit an error, delude oneself, errare, fall into error, go amiss, go astray, go wrong, labor under a misapprehension, make a mistake, misapprehend, miscompute, misconstrue, misinterpret, misjudge, misreckon, mistake, misunderstand, receive a false immression, slip

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See also: deviate, fail, lapse, lose, misapprehend, miscalculate, misconceive, misinterpret, misjudge, misread, mistake, misunderstand, offend